Add CommandFramework module

CommandFramework/testsrc/de/steamwar/command/NullMapperCommand.java

@@ -0,0 +1,59 @@
+/*
+ * This file is a part of the SteamWar software.
+ *
+ * Copyright (C) 2022  SteamWar.de-Serverteam
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+package de.steamwar.command;
+
+import de.steamwar.command.dto.ExecutionIdentifier;
+import de.steamwar.command.dto.TestSWCommand;
+import de.steamwar.command.dto.TestTypeMapper;
+
+import java.util.Collection;
+
+public class NullMapperCommand extends TestSWCommand {
+
+    public NullMapperCommand() {
+        super("nullmapper");
+    }
+
+    @Register
+    public void test(String sender, @AllowNull String arg) {
+        if (arg == null) {
+            throw new ExecutionIdentifier("null");
+        }
+        throw new ExecutionIdentifier("notnull");
+    }
+
+    @ClassMapper(value = String.class, local = true)
+    public TestTypeMapper<String> typeMapper() {
+        return new TestTypeMapper<String>() {
+            @Override
+            public String map(String sender, PreviousArguments previousArguments, String s) {
+                if (s.equals("Hello World")) {
+                    return null;
+                }
+                return s;
+            }
+
+            @Override
+            public Collection<String> tabCompletes(String sender, PreviousArguments previousArguments, String s) {
+                return null;
+            }
+        };
+    }
+}